Lena Dunham is seen having A LOT of sex in her hit TV show girls, but the star admits that in real life she didn’t really enjoy it until she hit 25.

That was only three years ago people.

The actress, who has been dating Fun.’s Jack Antonoff for two years, recently told fans that she spent too much time “worrying” about the guy’s pleasure and couldn’t really focus on what she was getting out of it.

Lena Dunham as Hannah Horvath in Girls (Image: Home Box Office)

"I don't think I even thought about whether I was enjoying sex until I was, like, 25, because I was so worried about whether other people were enjoying sex with me that it never would have occurred to me that it was an act I was supposed to receive any pleasure from,” she said.

"And then what I realised was having good sex takes two people who want to make each other feel good. There isn't a person who's 'good at sex' because it's an alchemy, it's a thing that happens between two people."

Before meeting her boyfriend, Lena openly admitted that her sex life had been pretty “disastrous”.

In response to her a fan’s question on YouTube, she said: "Before my current boyfriend, who's a lovely, lovely person, I had a train of the most disastrous, despicable, van-dwelling monsters in my bed and my bed and in my life.

"You have to love yourself to love someone who's going to love you. Let's take a moment to think about whether that made sense. An attraction to nice people is truly something that comes when you have an attraction to yourself.

"When you feel a lot of negativity towards yourself, you're almost sexually attracted to people who are going to reflect that back at you. When you learn to love and appreciate those qualities that you've tried so hard to suppress, suddenly that behaviour's just not going to be charming to you anymore."